For a long time researchers believed that conditions including Body Dysmorphic Disorder, Compulsive Skin Picking, Trichotillomania and to a lesser extent Tourette Syndrome were biologically linked, and for decades considered them part of an OCD-spectrum of disorders.

Despite a number of conditions being linked by the latest DSM under the category of ‘Obsessive Compulsive Disorder and Related Disorders’, most OCD specialists now believe that only one of those, Body Dysmorphic Disorder is closely linked to OCD, with the others being different conditions in their own right.

When two diagnoses occur in the same individual they are referred to as ‘co-morbid’, and many people with OCD may well be co-morbid with one or more of these or other conditions.

All you need to know about disorders related to Obsessive-Compulsive Disorder

This chapter will provide information about some of the related conditions that may be co-morbid with OCD. You can also navigate here from the About OCD tab.